Developing a multi-currency Expert Advisor — source codes from a series of articles – library MetaTrader 5

Developing a multi-currency Expert Advisor — source codes from a series of articles - library for MetaTrader 5
This series of articles is in the process of being written. As we move forward, source codes from new articles will be added to this library. It is recommended to review the code in the order of publication of articles in order to better monitor the development and changes made. At this stage, the general